Home / 30,898.64-42,660.60-18,327.44

Finding the Fourth Proportional to 30,898.64, 42,660.60 and 18,327.44

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Solution

The fourth proportional to 30,898.64, 42,660.60 and 18,327.44 is: 25,304.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,898.64 : 42,660.60 = 18,327.44 : x
  2. Step 2: Convert to fraction form
    30,898.64/42,660.60 = 18,327.44/x
  3. Step 3: Cross multiply
    30,898.64x = 42,660.60 × 18,327.44
  4. Step 4: Simplify right side
    30,898.64x = 781,859,586.86
  5. Step 5: Solve for x
    x = 781,859,586.86/30,898.64
  6. Step 6: Final answer
    x = 25,304.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.